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ROPE Language Reference - "sub"

Subtracts numbers.

Without AnchorBrackets, the "sub" action subtracts the topmost number on the stack from the previous one and pushes back the result; so "11 7 sub" means "11 - 7".

With AnchorBrackets it subtracts the specified numbers from the fist one in the list; so "sub(100 10 5)" means "100 - 10 - 5".

 11 7 sub println             # -- prints 4
 add(100 10 5 20) println     # -- prints 65

It is an error to attempt to subtract non-integer values.

ROPE Language Reference - "sub"

See Also